The little green monster
I often see the question of does jealousy reduce the more times you swing. For most, yes it does. Another question I see is does the pleasure of seeing your fantasy realized overcome those jealous feelings. Again, yes quite often it does.
The best thing you can do to reduce jealousy is to communicate with each other about how you feel. If you aren’t comfortable with something that is going on, tell your partner. If you or your partner honestly can not handle a specific event (tongue kissing/ oral sex/ full swap) you should probably avoid that event. Every couple has their own limitations, it is best to set yours at the point where both you and your spouse are most comfortable. The more open you are in your communication, the better your relationship and your experiences will be. You will also continue this communication throughout your lifestyle carreer.
Each situation is different, don’t jump in until you are ready. If you are having problems in your relationship and you think swinging will help, it won’t. If you have a close relationship built on honesty and communication, and swinging is something you both really want to do, then swinging will only strengthen your relationship. However, if jealousy in general is a major problem in your relationship, swinging may not be for you. Make sure that your relationship in and of itself is in good shape before you even consider swinging.